AlertDialog創建6種對話框的用法

AlertDialog生成的對話框可分為4個區域：圖標區，標題區，內容區，按鈕區

結構如圖：

AlertDialog對話框的使用：

1，創建AlertDialog.Builder對象
2，調用Builder對象的setTitle()設置標題，setIcon設置圖標
3，調用Builder對象的相關方法設置內容，AlertDialog提供如下六中設置指定對話框的內容：

setMessage()；設置簡單文本框的內容
setItems()；設置簡單列表的內容，數組
setSingleChoiceItems()；；設置單選列表的內容，內容參數可以是數組Cursor，ListAdapter
setMultiChoiceItems()；設置多選列表項的內容，內容參數可以是數組，Cursor
setAdapter();設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter
setView();設置內容，參數是自定義的View
4，調用Builder對象的setPositiveButton()和 setNegativeButton()設置按鈕和監聽器
5，調用Builder對象的create()方法創建AlertDialog對象，再調用AlertDialog對象的show()方法顯示對話框

 

總之：調用Builder對象設置圖標，標題，內容，按鈕，在create()，show()

代碼模板：

 

new AlertDialog.Builder(this)
			// 設置對話框標題
			.setTitle("簡單對話框")
			// 設置圖標
			.setIcon(R.drawable.tools)
                       //設置內容，可代替
			.setMessage("對話框的測試內容\n第二行內容").setPositiveButton("確定"，listener).setNegativeButton("取消",listener).create().show();

acitivity_main.xml

 

 

MainActivity.java

 

 

 

package com.hust.alertdialogtest;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnMultiChoiceClickListener;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.TableLayout;
import android.widget.TextView;

/*AlertDialog對話框的使用：
 * AlertDialog對話框有四個區域：圖標區，標題區，內容區，按鈕區
 * 1，創建AlertDialog.Builder對象
 * 2，調用Builder對象的setTitle()設置標題，setIcon設置圖標
 * 3，調用Builder對象的相關方法設置內容
 *        setMessage()；設置簡單文本框的內容
 *        setItems()；設置簡單列表的內容，數組
 *        setSingleChoiceItems()；；設置單選列表的內容，內容參數可以是數組，Cursor，ListAdapter
 *        setMultiChoiceItems()；設置多選列表項的內容，內容參數可以是數組，Cursor
 *        setAdapter();設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter
 *        setView();設置內容，參數是自定義的View
 * 4，調用Builder對象的setPositiveButton()和    setNegativeButton()設置按鈕和監聽器
 * 5，調用Builder對象的create()方法創建AlertDialog對象，再調用AlertDialog對象的show()方法顯示對話框
 *    
 *        
 *  總之：調用Builder對象設置圖標，標題，內容，按鈕，在create()，show()      
 * */
public class MainActivity extends Activity {
   TextView show;
   String[] items=new String[]{
		   "湖北省","福建省","貴州省","四川省"
   };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        show=(TextView) findViewById(R.id.textView1);
    }
  
    /*簡單文本對話框：builder.setMessage()設置內容*/  
    public void simple(View v){
    	AlertDialog.Builder  builder=new AlertDialog.Builder(this);
    	builder.setTitle("簡單對話框");
    	builder.setIcon(R.drawable.tools);
    	builder.setMessage("這是簡單文本對話框\n第二行內容");
    	
    	//為builder對象添加確定按鈕，不過這裡嵌套了一個函數
    	setPositiveButton(builder);
    	//為builder對象添加取消按鈕
    	builder=setNegativeButton(builder);
    	
    	//builder創建對話框對象AlertDialog
    	AlertDialog simpledialog=builder.create();
    	simpledialog.show();
    }
    /*簡單列表對話框（數組對話框）:builder.setItems()設置內容*/
    public void simpleList(View v){
    	AlertDialog.Builder builder=new AlertDialog.Builder(this);
    	builder.setTitle("數組列表對話框");
    	builder.setIcon(R.drawable.tools);
    	builder.setItems(items, new OnClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				show.setText("你單擊了 "+items[which]);
			}
    		
    	});   	
    	setPositiveButton(builder);
    	builder=setNegativeButton(builder);
    	
    	AlertDialog simplelistdialog=builder.create();
    	simplelistdialog.show();
    }
    /*單選列表項對話框：builder.setSingleChoiceItems()設置內容，內容參數可以是數組，Cursor，ListAdapter*/
    public void singleChoice(View v){
    	AlertDialog.Builder builder=new AlertDialog.Builder(this);
    	builder.setTitle("單選列表項對話框");
    	builder.setIcon(R.drawable.tools);
    	//設置單選列表項，默認選中第二項
    	builder.setSingleChoiceItems(items,1, new OnClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				show.setText("你單擊了 "+items[which]);
			}
    		
    	});   	
    	setPositiveButton(builder);
    	builder=setNegativeButton(builder);
    	
    	AlertDialog simplechoicedialog=builder.create();
    	simplechoicedialog.show();
    }
    /*
     * 
     *多選列表項對話框： builder.setMultiChoiceItems()設置內容，參數可以是數組，Cursor數據庫返回結果集
     * 
     * AlertDialog.Builder.setMultiChoiceItems(CharSequence[] items, boolean[] checkedItems, OnMultiChoiceClickListener listener)*/
    public void multiChoice(View v){
     	AlertDialog.Builder builder=new AlertDialog.Builder(this);
    	builder.setTitle("多選列表項對話框");
    	builder.setIcon(R.drawable.tools);
    	//設置單多選列表項，默認選中第二項，第四項
    	builder.setMultiChoiceItems(items,new boolean[]{false,true,false,true},new OnMultiChoiceClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which,
					boolean isChecked) {
				// TODO Auto-generated method stub
				//添加處理方法
			}
    		
    	});   	
    	
    	setPositiveButton(builder);
    	builder=setNegativeButton(builder);
    	
    	AlertDialog simplechoicedialog=builder.create();
    	simplechoicedialog.show();
    }
    /*自定義Adapter對話框:builder.setAdapter設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter*/    
    public void customList(View v){
    	AlertDialog.Builder  builder=new AlertDialog.Builder(this);
    	builder.setTitle("自定義Adapter對話框");
    	builder.setIcon(R.drawable.tools);
    	builder.setAdapter(new ArrayAdapter(this,R.layout.array_item,items), new OnClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				show.setText("你單擊了 "+items[which]);
			}
    		
    	});
    	
    	//為builder對象添加確定按鈕，不過這裡嵌套了一個函數
    	setPositiveButton(builder);
    	//為builder對象添加取消按鈕
    	builder=setNegativeButton(builder);
    	
    	//builder創建對話框對象AlertDialog
    	AlertDialog adapterdialog=builder.create();
    	adapterdialog.show();
    	
    }
    /*自定義View對話框：builder.setView()設置View*/
    public void customView(View v){
    	//獲取xml布局文件對象
    	TableLayout loginform=(TableLayout) getLayoutInflater().inflate(R.layout.login, null);
    	
    	AlertDialog.Builder  builder=new AlertDialog.Builder(this);
    	builder.setTitle("自定義View對話框");
    	builder.setIcon(R.drawable.tools);
    	//設置對話框顯示的View組件
    	builder.setView(loginform);
    	
    	//為builder對象添加確定按鈕，不過這裡嵌套了一個函數
    	setPositiveButton(builder);
    	//為builder對象添加取消按鈕
    	builder=setNegativeButton(builder);
    	
    	//builder創建對話框對象AlertDialog
    	AlertDialog viewdialog=builder.create();
    	viewdialog.show();
    	
    	
    }
    //返回對象是原來的Builder對象
    private  AlertDialog.Builder  setPositiveButton(AlertDialog.Builder builder) {
		// TODO Auto-generated method stub
		 return builder.setPositiveButton("確定", new OnClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				show.setText("單擊了【確定】按鈕！");
			}
			 
		 });
	}
     
    //返回對象是Builder對象
    private  AlertDialog.Builder  setNegativeButton(AlertDialog.Builder builder) {
		// TODO Auto-generated method stub
		 return builder.setNegativeButton("取消", new OnClickListener(){

			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				show.setText("單擊了【取消】按鈕！");
			}
			 
		 });
	}



	@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}